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Finding the Fourth Proportional to 308.41, 425.56 and 177.39

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Solution

The fourth proportional to 308.41, 425.56 and 177.39 is: 244.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.41 : 425.56 = 177.39 : x
  2. Step 2: Convert to fraction form
    308.41/425.56 = 177.39/x
  3. Step 3: Cross multiply
    308.41x = 425.56 × 177.39
  4. Step 4: Simplify right side
    308.41x = 75,489.20
  5. Step 5: Solve for x
    x = 75,489.20/308.41
  6. Step 6: Final answer
    x = 244.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.